Usage: 2 forms in 6 verses
Form Translated As     In Verse(s)
τετράδοσ fourth LXX.Hag.2.18
τετράδι fourth LXX.Hag.1.15LXX.Hag.2.10LXX.Hag.2.20LXX.Zech.1.7LXX.Zech.7.1

Liddell-Scott-Jones

τετράς (tetras) fourth G:N

τετράς, άδος, ,

the number four, [Refs 4th c.BC+]

__2 the fourth dav of the month, [Refs 8th c.BC+]; so Boeotian dialect πετράς (which see); τετράδι γέγονας, proverbial of one born to a life of labour [Refs 5th c.BC+]
__2.b the fourth day of the week, Wednesday, [Refs 4th c.AD+]
__3 a space of four days, [Refs 5th c.BC+]
__4 the four quarters of the moon, [Refs 4th c.BC+]
__II ={τετραρχία}[Refs 5th c.BC+]
__III κατὰ τετράδα διατετάχθαι in four divisions, [Refs 1st c.BC+]